Devaughn's age is two times Sydney's age. The sum of their ages is

84

. What is Sydney's age?

The mean is always the best measure of central tendency for a set of data. true false

Find 4 more than the quotient of 9 and 2

The space shuttle traveled 36,000 miles in 5 hours. What is its unit rate of speed?

The height of each story of an office building is feet. The height is measured from the ceiling to the floor. The building has three underground levels for parking. A car is parked two levels below ground.

Grandma put 1⁄6 teaspoon of pepper into the soup. After tasting the soup, she added 1⁄8 teaspoon of pepper. How much pepper is in the soup?

Superman needs to save Lois from the clutches of Lex Luthor. After flying for 6 seconds, he is 1758 meters from her. Then at 9 seconds he is 1587 meters from her. What is Superman's average rate?

Find a whole number that, when added to the data set below, does not change the interquartile range. 18, 20, 22, 26, 27, 28, 30, 34 One possible whole number is__.

If Vector A is (6, 4) and Vector B is (-2, - 1), what is A - B? A. (8,5) B. (8,3) C. (4,5) D. (4,3)

What is the decimal for 36/10

What 2a=4.6 show your work